President Obama didn't apologize for the atomic bomb the U.S. dropped on Hiroshima seven decades ago, but he called on the world's nuclear powers to have the courage to give them up
Obama's Hiroshima visit was hugely momentous
Obama makes history, confronts past in Hiroshima
Barack Obama first sitting president to visit Hiroshima since atomic bomb in 1945
Sympathy for victims but no apology as Obama makes historic Hiroshima visit
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